diff --git a/src/Makefile.am b/src/Makefile.am
index 32afbe3c382..fb29476a30c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -201,6 +201,7 @@ souffle_sources = \
         ast2ram/ProvenanceClauseTranslator.h               \
         ast2ram/ValueIndex.cpp                             \
         ast2ram/ValueIndex.h                               \
+        ast2ram/ValueTranslator.cpp                        \
         ast2ram/ValueTranslator.h                          \
         interpreter/Context.h                              \
         interpreter/Engine.cpp                             \
diff --git a/src/ast2ram/ValueTranslator.cpp b/src/ast2ram/ValueTranslator.cpp
new file mode 100644
index 00000000000..a31a99d14d9
--- /dev/null
+++ b/src/ast2ram/ValueTranslator.cpp
@@ -0,0 +1,49 @@
+/*
+ * Souffle - A Datalog Compiler
+ * Copyright (c) 2020 The Souffle Developers. All rights reserved
+ * Licensed under the Universal Permissive License v 1.0 as shown at:
+ * - https://opensource.org/licenses/UPL
+ * - <souffle root>/licenses/SOUFFLE-UPL.txt
+ */
+
+/************************************************************************
+ *
+ * @file ValueTranslator.cpp
+ *
+ ***********************************************************************/
+
+#include "ast2ram/ValueTranslator.h"
+#include "ast/NumericConstant.h"
+#include "ast2ram/AstToRamTranslator.h"
+#include "ast2ram/ValueIndex.h"
+#include "ram/FloatConstant.h"
+#include "ram/SignedConstant.h"
+#include "ram/UndefValue.h"
+#include "ram/UnsignedConstant.h"
+
+namespace souffle::ast2ram {
+
+Own<ram::Expression> ValueTranslator::visitVariable(const ast::Variable& var) {
+    assert(index.isDefined(var) && "variable not grounded");
+    return translator.makeRamTupleElement(index.getDefinitionPoint(var));
+}
+
+Own<ram::Expression> ValueTranslator::visitUnnamedVariable(const ast::UnnamedVariable&) {
+    return mk<ram::UndefValue>();
+}
+Own<ram::Expression> ValueTranslator::visitNumericConstant(const ast::NumericConstant& c) {
+    assert(c.getType().has_value() && "At this points all constants should have type.");
+
+    switch (*c.getType()) {
+        case ast::NumericConstant::Type::Int:
+            return mk<ram::SignedConstant>(RamSignedFromString(c.getConstant(), nullptr, 0));
+        case ast::NumericConstant::Type::Uint:
+            return mk<ram::UnsignedConstant>(RamUnsignedFromString(c.getConstant(), nullptr, 0));
+        case ast::NumericConstant::Type::Float:
+            return mk<ram::FloatConstant>(RamFloatFromString(c.getConstant()));
+    }
+
+    fatal("unexpected numeric constant type");
+}
+
+}  // namespace souffle::ast2ram
diff --git a/src/ast2ram/ValueTranslator.h b/src/ast2ram/ValueTranslator.h
index c7a03bea916..9e9e2b628a4 100644
--- a/src/ast2ram/ValueTranslator.h
+++ b/src/ast2ram/ValueTranslator.h
@@ -10,13 +10,10 @@
  *
  * @file ValueTranslator.h
  *
- * Value translator.
- *
  ***********************************************************************/
 
 #pragma once
 
-#include "ast/NumericConstant.h"
 #include "ast/UnnamedVariable.h"
 #include "ast/Variable.h"
 #include "ast/analysis/Functor.h"
@@ -36,7 +33,6 @@
 #include "ram/Expression.h"
 #include "ram/Extend.h"
 #include "ram/Filter.h"
-#include "ram/FloatConstant.h"
 #include "ram/IO.h"
 #include "ram/IntrinsicOperator.h"
 #include "ram/LogRelationTimer.h"
@@ -61,11 +57,15 @@
 #include "ram/Swap.h"
 #include "ram/TranslationUnit.h"
 #include "ram/TupleElement.h"
-#include "ram/UndefValue.h"
-#include "ram/UnsignedConstant.h"
 #include "ram/UserDefinedOperator.h"
 #include "ram/utility/Utils.h"
 
+namespace souffle::ast {
+class Variable;
+class UnnamedVariable;
+class NumericConstant;
+}  // namespace souffle::ast
+
 namespace souffle::ast2ram {
 
 class ValueTranslator : public ast::Visitor<Own<ram::Expression>> {
@@ -73,30 +73,11 @@ class ValueTranslator : public ast::Visitor<Own<ram::Expression>> {
     ValueTranslator(AstToRamTranslator& translator, const ValueIndex& index, SymbolTable& symTab)
             : translator(translator), index(index), symTab(symTab) {}
 
-    Own<ram::Expression> visitVariable(const ast::Variable& var) override {
-        assert(index.isDefined(var) && "variable not grounded");
-        return translator.makeRamTupleElement(index.getDefinitionPoint(var));
-    }
-
-    Own<ram::Expression> visitUnnamedVariable(const ast::UnnamedVariable&) override {
-        return mk<ram::UndefValue>();
-    }
+    Own<ram::Expression> visitVariable(const ast::Variable& var) override;
 
-    Own<ram::Expression> visitNumericConstant(const ast::NumericConstant& c) override {
-        assert(c.getType().has_value() && "At this points all constants should have type.");
-
-        switch (*c.getType()) {
-            case ast::NumericConstant::Type::Int:
-                return mk<ram::SignedConstant>(RamSignedFromString(c.getConstant(), nullptr, 0));
-            case ast::NumericConstant::Type::Uint:
-                return mk<ram::UnsignedConstant>(RamUnsignedFromString(c.getConstant(), nullptr, 0));
-            case ast::NumericConstant::Type::Float:
-                return mk<ram::FloatConstant>(RamFloatFromString(c.getConstant()));
-        }
-
-        fatal("unexpected numeric constant type");
-    }
+    Own<ram::Expression> visitUnnamedVariable(const ast::UnnamedVariable&) override;
 
+    Own<ram::Expression> visitNumericConstant(const ast::NumericConstant& c);
     Own<ram::Expression> visitStringConstant(const ast::StringConstant& c) override {
         return mk<ram::SignedConstant>(symTab.lookup(c.getConstant()));
     }